Product Introduction
The 3M™ Flexible Diamond Whetstone 6220J is a high-performance sharpening tool using micron-graded diamond mineral bonded to a lightweight aluminum block. It delivers fast cutting, operator comfort, and long service life for maintaining sharp edges on a variety of tools.
3M™ Flexible Diamond Whetstone 6220J Features:
- Micron-graded diamond mineral for sharp, fast cutting
- Metal bond resists heat during grinding
- Lightweight aluminum block for operator comfort
- Open dot pattern minimizes loading and extends life
- Color-coded grades for accurate use
3M™ Flexible Diamond Whetstone 6220J Applications:
- Precision sharpening of blades, knives, and chisels
- Carbide tool maintenance
- Faceting gemstones and fine tools
- Workshop and industrial tool refurbishment
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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Typical Properties
| Property | Value |
| Abrasive Material | Diamond |
| Application | Deburring, Finishing |
| Brands | 3M |
| Equipment – Machines | Hand Sanding |
| For Use On | Ceramic, Soft Metals |
| Industries | General Industrial, MRO, Metalworking, Precision Grinding & Finishing |
| Micron Grade | M74 |
| Product Color | Red |
| Product Form | Whetstone |
| Sub Applications | Tool Sharpening |
| Sub Industries | Plumbing Fixtures, Turbine Engines, Metal Fabrication, Medical Instruments, Plating & Polishing, Metal Implants, Builders Hardware |
| Overall Length (Imperial) | 8 in |
| Overall Length (Metric) | 203.2 mm |
| Overall Thickness (Imperial) | 2.953 in |
| Overall Thickness (Metric) | 75 mm |
| Overall Width (Imperial) | 3 in |
| Overall Width (Metric) | 76.2 mm |



